20113213110 has 32 divisors (see below), whose sum is σ = 48275764992. Its totient is φ = 5363073120.

The previous prime is 20113213079. The next prime is 20113213129. The reversal of 20113213110 is 1131231102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20113213110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493615 + ... + 532805.

It is an arithmetic number, because the mean of its divisors is an integer number (1508617656).

Almost surely, 2^20113213110 is an apocalyptic number.

20113213110 is an abundant number, since it is smaller than the sum of its proper divisors (28162551882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113213110 is a wasteful number, since it uses less digits than its factorization.

20113213110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56308.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20113213110 its reverse (1131231102), we get a palindrome (21244444212).

The spelling of 20113213110 in words is "twenty billion, one hundred thirteen million, two hundred thirteen thousand, one hundred ten".